Home / 21,283.24-31,913.93-11,430.81

Finding the Fourth Proportional to 21,283.24, 31,913.93 and 11,430.81

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Solution

The fourth proportional to 21,283.24, 31,913.93 and 11,430.81 is: 17,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.24 : 31,913.93 = 11,430.81 : x
  2. Step 2: Convert to fraction form
    21,283.24/31,913.93 = 11,430.81/x
  3. Step 3: Cross multiply
    21,283.24x = 31,913.93 × 11,430.81
  4. Step 4: Simplify right side
    21,283.24x = 364,802,070.18
  5. Step 5: Solve for x
    x = 364,802,070.18/21,283.24
  6. Step 6: Final answer
    x = 17,140.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.